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    1   /**
    2    * BSD-style license; for more info see http://pmd.sourceforge.net/license.html
    3    */
    4   package net.sourceforge.pmd.lang.java.rule.design;
    5
    6   import net.sourceforge.pmd.lang.java.ast.JavaNode;
    7   import net.sourceforge.pmd.lang.java.rule.AbstractStatisticalJavaRule;
    8   import net.sourceforge.pmd.stat.DataPoint;
    9
    10  /**
    11   * This is a common super class for things which
    12   * have excessive length.
    13   * <p/>
    14   * i.e. LongMethod and LongClass rules.
    15   * <p/>
    16   * To implement an ExcessiveLength rule, you pass
    17   * in the Class of node you want to check, and this
    18   * does the rest for you.
    19   */
    20  public class ExcessiveLengthRule extends AbstractStatisticalJavaRule {
    21      private Class<?> nodeClass;
    22
    23      public ExcessiveLengthRule(Class<?> nodeClass) {
    24  	this.nodeClass = nodeClass;
    25      }
    26
    27      @Override
    28      public Object visit(JavaNode node, Object data) {
    29  	if (nodeClass.isInstance(node)) {
    30  	    DataPoint point = new DataPoint();
    31  	    point.setNode(node);
    32  	    point.setScore(1.0 * (node.getEndLine() - node.getBeginLine()));
    33  	    point.setMessage(getMessage());
    34  	    addDataPoint(point);
    35  	}
    36
    37  	return node.childrenAccept(this, data);
    38      }
    39  }